%% Nichols Plot of Several Dynamic Systems
% Compare the frequency response of a continuous-time system to an equivalent discretized system on the same Nichols plot.
% Create continuous-time and discrete-time dynamic systems.

H = tf([1 0.1 7.5],[1 0.12 9 0 0]);
Hd = c2d(H,0.5,'zoh');

% Create a Nichols plot that displays both systems.

nichols(H,Hd)

% Copyright 2021 The MathWorks, Inc.